When to go · Simi Valley
Simi Valley in September
Avoid month. Listed as a month to avoid: Jul–Sep (inland heat, often 35 °C+), Thanksgiving, Christmas and New Year's Day at the Reagan Library.Avoid month. Listed as a month to avoid: Jul–Sep (inland heat, often 95 °F+), Thanksgiving, Christmas and New Year's Day at the Reagan Library.
Key facts
- Verdict
- Avoid
- Temperature
- 34°C93°F / 13°C55°F
- average high / low
- Rain days
- 0
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Listed as a month to avoid: Jul–Sep (inland heat, often 35 °C+), Thanksgiving, Christmas and New Year's Day at the Reagan Library.Listed as a month to avoid: Jul–Sep (inland heat, often 95 °F+), Thanksgiving, Christmas and New Year's Day at the Reagan Library.
Weather in September
- Simi ValleyHighs around 34 °C, lows around 13 °C, rain on about 0 daysHighs around 93 °F, lows around 55 °F, rain on about 0 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Labor Day big impact
1st Monday of September · United States
End of summer; last big road-trip weekend.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
What to pack
- Light, breathable clothes, a sun hat and sunscreen